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** Changed in: alsa-driver (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1355984
Title:
Built in speakers do not work on iMac 14,2
Status in alsa-driver package in Ubuntu:
Incomplete
Status in linux package in Ubuntu:
Incomplete
Bug description:
Xubuntu 14.04 on iMac 14,2 no sound from internal speakers. Loud and clear
using OSX 10.9.4. Also tried installing Lubuntu (no sound at all) Linux Mint 16
& 17 and Ubuntu 13.04, 13.10 (same problem as Xubuntu).
Have all PulseAudio utils installed, all devices are listed but only analogue
volume meter shows outputs when playing but as above nothing from speakers.
AlsaMixer shows S/PDIF (highlighted), SPDIF 1 & S/PDIF 2 not MM, set at 00
but cannot be adjusted.
To get the headphones to work I upgraded to the daily ALSA snapshot
found here: https://code.launchpad.net/~ubuntu-audio-
dev/+archive/ubuntu/alsa-daily/+packages
The output of alsa-info.sh is here:
http://www.alsa-project.org/db/?f=08cf13552b70232c96fea9293fdd54066243d79a I
have downloaded the HDA Analyzer tool but I can't seem to get the internal
speakers to work correctly in any consistent way, although they do occasionally
work correctly for a few seconds. I can consistently make sound come from the
speakers if I chose VREF = 50 or 80 in Node[0x0d]pin but it sounds like I am
using a much smaller lower quality speaker when I do that. Here is the text
dump for that node configuration:
Node 0x0d [Pin Complex] wcaps 0x41048b: Stereo Amp-In
Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0
Amp-In vals: [0x00 0x00]
Pincap 0x00001764: IN Detect Balance
Vref caps: HIZ 50 GRD 80
Pin Default 0x400000f0: [N/A] Line Out at Ext N/A
Conn = Unknown, Color = Unknown
DefAssociation = 0xf, Sequence = 0x0
Unsolicited: tag=0x00, enabled=0
Power: setting=D0, actual=D0
Delay: 1 samples
WORKAROUND for the headphones only: # echo "options snd-hda-intel
model=imac27_122" >> /etc/modprobe.d/imac_local.conf followed by a
reboot.
---
ApportVersion: 2.14.1-0ubuntu3.3
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: ladmin 1910 F.... pulseaudio
/dev/snd/controlC0: ladmin 1910 F.... pulseaudio
CurrentDesktop: Unity
DistroRelease: Ubuntu 14.04
InstallationDate: Installed on 2014-08-11 (1 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: Apple Inc. iMac14,2
NonfreeKernelModules: wl
Package: linux (not installed)
ProcFB: 0 nouveaufb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-33-generic.efi.signed
root=UUID=2f77d057-5c9c-42d8-b2c0-18507f43420e ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.13.0-33.58-generic 3.13.11.4
RelatedPackageVersions:
linux-restricted-modules-3.13.0-33-generic N/A
linux-backports-modules-3.13.0-33-generic N/A
linux-firmware 1.127.5
Tags: trusty trusty
Uname: Linux 3.13.0-33-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 03/14/2014
dmi.bios.vendor: Apple Inc.
dmi.bios.version: IM142.88Z.0118.B02.1403141302
dmi.board.asset.tag: Base Board Asset Tag#
dmi.board.name: Mac-27ADBB7B4CEE8E61
dmi.board.vendor: Apple Inc.
dmi.board.version: iMac14,2
dmi.chassis.type: 13
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-27ADBB7B4CEE8E61
dmi.modalias:
dmi:bvnAppleInc.:bvrIM142.88Z.0118.B02.1403141302:bd03/14/2014:svnAppleInc.:pniMac14,2:pvr1.0:rvnAppleInc.:rnMac-27ADBB7B4CEE8E61:rvriMac14,2:cvnAppleInc.:ct13:cvrMac-27ADBB7B4CEE8E61:
dmi.product.name: iMac14,2
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
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